Shukla, S.N., S. Khan, N. Upadhyay, P.S. Tiwari, P. Gour, and A. Srivastava. 2010. “Studies on Reactivity of Homo and Heterobimetallic Thiocyanate Bridged Lewis Acid With Schiff Base Derived from 1,2-Diaminopropane With Salicylaldehyde”. Asian Journal of Chemistry 18 (1):341-50. https://asianpubs.org/index.php/ajchem/article/view/21302.